Major flooding on the roads near boston, vehicles stranded. In maryland, video of Power Lines Toppling under cars, Trapping Dozens of people for hours. At least two deaths blamed on the storms. A team hit by a falling tree in south carolina, and a man struck by lightning in alabama. Our team in the storm zone. Also, the massive strike in los angeles. City workers walking off the job. What theyre demanding, and the major impact on city services. New video of that violent brawl on an alabama riverfront. What it reveals and the charges police announced today. The New York City Beach shut down after a rare shark attack. A 65yearold woman critically injured. Her condition tonight. The popular Weight Loss Drug wegovy could have additional benefits for your heart. What a new study has found. Our nbc news investigation into selfdriving cars. How many are involved in crashes. What happened when we took a ride in one. And the largest Mega Millions jackpot in history, nearly 1. 6 billion up for grabs, just hours from now. Announcer this is Nbc Nightly News with lester holt. Good evening and welcome. We start where we left off last night, that violent but slowmoving storm that was working its way up the east coast when we came on the air, packing near hurricaneforce winds, Toppling Trees and power lines. Today that destructive Weather System reaches into new england, bringing thunderstorms, flooding rains, and at least one confirmed tornado. In all, 600 storms reported across the nation yesterday, making it the second most active storm day of 2023. Claiming lives in alabama and south carolina. Fierce wind gusts in maryland left 33 people trapped in cars for hours, pinned in their vehicles by toppled power lines. Today, airlines playing catchup after 9,000 Flight Delays and 1800 cancellations. Meantime, tonight parts of massachusetts, which saw as much as 5 inches of rain in under six hours remain under flood watches through this evening. Kathy park has late details. Reporter tonight, a confirmed tornado touching down in massachusetts, Leveling Trees and damaging homes. Other parts of new england under water. But Flash Floods Stranding drivers and swallowing parked cars. The same storm system slamming states up and down the east coast monday night. Parts of pennsylvania took the brunt of the brutal weather. I see the winind coming through in the darkness. Reporter andrew took cover in his payment as Tornado Warnings were issued. And then i hear the three bomb impact simultaneous crashing around the house. Reporter in the d. C. Suburbs, an outbreak of heavy downpours, hail and hurricaneforce winds. Furniture went whoosh and the power went whump. Reporter while in northern maryland, a massive operation to clear 30 power lines, knocked down as explosive storms plowed through at the height of rush hour. 33 people trapped inside their cars for hours, including more than a dozen children. Emergency management Officials Say in these situations, drivers should stay in their car and wait for instructions from first responders. Poles start to fall down. Reporter Joseph Dorsey and his four grandkids were driving when they witnessed disaster unfolding right in front of them. They managed to get out of harms way just in time. The sheriff came through telling drivers not to get out of the car. Reporter whats the biggest takeaway from all of this . That its a miracle. I couldnt believe the poles were snapping the way they were. The poles were just snapping like they were twigs. Reporter and the dangerous wave of Severe Weather turned deadly in the south. Lightning struck and killed a man in alabama. In south carolina, a fallen tree killed a 15yearold. Its going to be a tree in a garage, a mother and child trapped in the garage. Reporter an active week of damaging storms as parts of the midwest and south brace for the next round tomorrow. And kathy, Cleanup Efforts still under way in parts of maryland tonight . Lester, that is correct. There is still a big cleanup under way right now. As you can see behind me, dozens of cars still need to be removed. Power lines are scattered throughout the area. They are deactivated. Crews are out hoare every day, but its unclear when the highway will be back open. Lester . Kathy park, thank you. Parts of the countrys second largest city, los angeles, were shut down as 11,000 city workers walked off the job. Everything from Trash Collection to Swimming Pools to l. A. X. Affected. Miguel almaguer is there. Reporter walking off the job and to the steps of city hall, tonight 11,000 Los Angeles City workers showing strength in numbers. A oneday strike, the first in more than 40 years, aimed at shutting down or disrupting services in the nations second largest city. People are tired of not being heard, not being seen, and most importantly, being respected and appreciated. Reporter protests seeing stalled consider negotiations, City Custodians and maintenance crews just some of those walking the picket lines. Impacting Shuttle Services at l. A. X. , animal shelters, as well as trash pickup across the city. Today Traffic Officers and lifeguards were also a noshow. We feel like weve been slapped in the face. Were changing that today. Were sending a message loud and clear. Even though the citys contract with the union doesnt expire until this winter, seiu local 721 says the city is negotiating in bad faith. As the Union Demands the city Fill Thousands of vacancies and offer better pay and benefits, tonight the mayor said the city is not shut down and will continue bargaining in good faith for fair contracts. Everybody deserves to make a living. Reporter in what has become a summer of strikes, city workers joined writers, actors, and Hotel Workers in los angeles who have been on the picket line for weeks. Tomorrow, one strike comes to an end when thousands of workers remain united over their division with the city. Miguel almaguer, nbc news, los angeles. The Supreme Court today revised the Biden Administrations restrictions on socalled ghost guns, those gunmaking kits people can buy online that are harder to trace. The court ruled the restrictions will remain in place while lower courts consider the issue. The Biden Administration says ghost guns should be regulated like other firearms. In the race for president , Florida Governor ron desantis has replaced his campaign manager. The latest staff shakeup as he struggles to gain traction against former president trump. The move comes after two previous rounds of campaign layoffs. In ohio, boaters are turning out in force for a rare august Special Election. The reason, it could have huge implications on Abortion Rights in the state. Ali vitali is there for us. Reporter tonight in ohio, high turnout for a highly charged Special Election that could determine the fate of Abortion Rights here. Voters weighing whether to require a 60 threshold to amend the states constitution, rather than just a majority. Top republicans backing the change, known as issue 1 on the ballot. If you want to change the law, change the law. You can do that with a simple majority. But in the constitution, we should have a higher standard. Reporter but opponents say issue 1 is only designed to make it harder to enshrine abortion right protections in the states constitution, which ohioans will vote on in november. The gop Secretary Of State recently saying issue 1 is 100 about blocking abortion protection. Has got to go, hey hey, ho ho. Reporter issue 1 opponents Sensing Energy on the ground. Folks are energized. Folks are angry and theyre seeing this as an opportunity to really have their voice heard. Reporter its all against the national backdrop of red states losing referendums on abortion the past year since the Supreme Court overturned roe v. Wade. Some republicans here secondguessing their partys move. Whats the lesson for your party if come tuesday night or wednesday morning the Ballot Initiative fails . Maybe we should spend more time thinking through things before taking the step. Reporter but a Top Republican disagreed. Any regrets about the approach . No, its better to fight and lose than never fight at all. I can tell you this. I think it will succeed. Reporter results in this typically red state will provide a road map for other states, either for future efforts to stymie Abortion Access or to paint republicans as out of step on this issue. Lester . Ali vitali, thank you. Surprising news tonight about a popular Weight Loss Drug that might also ward off other Serious Health risks. Anne thompson is following this. What did the study find . Lester, this is a large study that finds that the Weight Loss Drug wegovy not only helps people lose pounds, it also reduces their risk of strokes and Heart Attacks by 20 . These results are from a Clinical Trial of more than 17,000 adults 45 years and older who have Cardiovascular Disease and are also considered overweight or obese. The findings were released by the drugmaker, but they have not yet been peer reviewed. Its an expensive drug. Will insurance start covering it now . Well, not yet. This drug can run up to 1300 a month, but few insurance plans cover it. The largest association of Health Insurers today said the results are potentially encouraging, but the longterm effectiveness cannot be based on a manufacturers press release. And the group says it will analyze the new evidence as it comes in, lester. Anne thompson, thank you. In montgomery, alabama, charges were announced today against three men involved in that violent confrontation at a riverfront dock. And there is new video of that incident tonight. Sam brock has late details for us. Reporter three men in the middle of this montgomery brawl tonight are facing assault charges. 13 individuals were detained and brought to Police Headquarters for questioning. This investigation is ongoing, and more charges are likely. Reporter the trio of men facing misdemeanor charges, richard roberts, allen todd and zachary shipman. Police say one person has already turned himself in, with the others expected to tonight. The incident has drawn national outrage. I dont think you can judge any community in one incident. Reporter the man seen attacked in the video is riverboat cocaptain damien pickett. Police say the captain spent about 45 minutes trying to get the pontoon boat owners trying to move using a p. A. System before Pickett Untied the boat. The cocaptain was doing his job. He was simply trying to move the boat just enough to where the cruise ship can park. Reporter this new video shows other men coming to picketts aid as the altercation escalates. The unfolding fight largely along racial lines, fueling questions about possible hate crime charges, though the chief says there is currently no evidence that would meet the fbis standard for that. There was no stone unturned. We examined this over a period of time. Not only that night, but since that night. We were unable to present any incite a riot or racially biased charges at this time. Reporter those who witnessed the melee like shea and rihannah felt helpless what is your takeaway about what you witnessed the other weekend . It is a big surprise. It is a shocker. You never know how people are going to react nowadays. Reporter a night marred by the last 72 hours hoping the investigation delivers justice. Sam brock, nbc news. 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When that happens, you need to be extra careful. Reporter the 65yearold was rushed to the hospital where she is now in stable condition. A top Police Official says dramatic damage was done to her leg. The police were at the beach today with drones, helicopters, and boats, while lifeguards made sure people stayed out of the water. Its the first suspected shark bite here in 70 years, but not far away on long island, there have been multiple attacks this summer. Five people were bitten over the fourth of july, shutting beaches down during the busy holiday. Last july, there was a similar flurry of attacks in the same area. Five people were bitten, including teenaged surfer max haynes. I didnt see anything coming. Just i felt on my foot like a bear trap just get me from below, and hard. It felt like it broke my foot. Reporter marine biologists believe the small bait fish that sharks eat called bunkers may be partially to blame. The bunkers stay ofoffshore, the sharks stay qualify shore. 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